/**
 * @iota-big3/sdk-blockchain - Clean NFT Manager
 * NFT minting, trading, and marketplace management
 */
import { EventEmitter } from 'events';
import type { AuctionParams, Bid, BlockchainHealthResult, ChainId, IBlockchainManager, MarketplaceListing, NFT, NFTCollection, NFTMetadata, TransactionReceipt } from '../types';
export declare class NFTManager extends EventEmitter implements IBlockchainManager {
    isEnabled: boolean;
    private collections;
    private nfts;
    private listings;
    private auctions;
    private initialized;
    constructor();
    initialize(): Promise<void>;
    createCollection(name: string, symbol: string, chainId: ChainId, standard?: 'ERC721' | 'ERC1155'): Promise<NFTCollection>;
    mintNFT(collectionAddress: string, chainId: ChainId, recipient: string, metadata: NFTMetadata): Promise<NFT>;
    transferNFT(nft: NFT, to: string): Promise<TransactionReceipt>;
    createListing(nft: NFT, price: string, currency?: string): Promise<MarketplaceListing>;
    purchaseNFT(listingId: string, buyer: string): Promise<TransactionReceipt>;
    createAuction(params: AuctionParams): Promise<string>;
    placeBid(auctionId: string, bidder: string, amount: string): Promise<void>;
    getNFT(contractAddress: string, tokenId: string, chainId: ChainId): NFT | undefined;
    getCollection(address: string, chainId: ChainId): NFTCollection | undefined;
    getListing(listingId: string): MarketplaceListing | undefined;
    getAuction(auctionId: string): {
        params: AuctionParams;
        bids: Bid[];
    } | undefined;
    getActiveListings(): MarketplaceListing[];
    getNFTsByOwner(owner: string): NFT[];
    getHealth(): Promise<BlockchainHealthResult>;
    getMetrics(): {
        totalTransactions: number;
        successfulTransactions: number;
        failedTransactions: number;
        averageGasUsed: string;
        totalValueTransferred: string;
        activeWallets: number;
    };
    shutdown(): Promise<void>;
}
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